Microsoft has revealed the pricing details of app purchases in the Windows Store on the Windows Store for Developers blog. The model's pretty standard with the existing model that Apple's set out in the App Store.
Obviously, apps can be free or paid. Paid apps can be priced in the range of $1.49 up to $999.99, with the company taking a 30 percent cut of each sale, although that percentage will be lowered to 20 percent if the app reaches $25,000 in sales. We're guessing that Microsoft's just not a fan of the $.99 standard that Apple's set.
However, developers won't be restricted to a free or paid plan. Rather, they're free to monetize as they please. A few of the monetization examples that Microsoft gave on its blog included trial periods, in-app purchases, advertising in apps, and billing through developers' own systems.
Developers are free to distribute desktop apps at their discretion, as had been done in the past. The above pricing model only applies to Metro apps, which can only be distributed through the Windows Store.